Students estimated the length of one minute without reference to a watch or clock, and the times (seconds) are listed below. Assume that a simple random sample has been selected. Use a 0.01 significance level to test the claim that these times are from a population with a mean equal to 60 seconds. Does it appear that students are reasonably good at estimating one minute? 70 81 40 64 42 21 61 65 68 48 64 70 95 90 66 Perform the test assuming that the requirements are met. Identify the null and alternative hypotheses. Ho: H 60 %3D H: H (Type integers or decimals. Do not round.) 60 Identify the test statistic. (Round to two decimal places as needed.) Help me solve this View an example Get more help - Clear all Check answer 80 DII DD 4三 F3 F4 F5 F6 F7 FB F9 F10 F11 F12 %23 $4 & 3 4 5 6 7 8 %3D dele

A researcher selects a sample of international students and provides them with extra support to pursue their educational goals. The graduation rates for the sample is compared to the graduation rates for international students overall. In this study design, what are the null and alternative hypotheses? answer should be in the form of 2 complete sentences.

A researcher believes that more than half of college students average less than 6 hours of sleep per night during the week.  Suppose she collected data to test her belief and found a p-value  < 0.0001.  Fill in the information for her hypothesis test below. Type of test:   a. Left-tail   b. Right-tail   c. Two-tail

You may need to use the appropriate appendix table or technology to answer this question. In 2012, seventy percent of Canadian households had an internet connection. A sample of 370 households taken in 2013 showed that 76% of them had an internet connection. We are interested in determining whether or not there has been a significant increase in the percentage of the Canadian households that have internet connections. (a) State the null and alternative hypotheses to be tested. (Enter != for as needed. Let p be the proportion of all Canadian households with internet connections.) Ho: на: (b) Compute the test statistic. (Round your answer to two decimal places.) (c) The null hypothesis is to be tested at the 5% level of significance. Determine the critical value(s) for this test. (Round your answer(s) to two decimal places. If the test is one-tailed, enter NONE for the unused tail.) test statistic (d) What do you conclude? Do not reject Ho. We can conclude that there has been a…

Calculate the test statistic for the test of hypotheses

Studies done by the CDC have found that about 35.2% of all American adults do not get enough sleep (<7 hours) in 2014. Researchers feel that this percent is higher for men (age 18-24). From a sample of 200 men, 88 indicated that they get less than 7 hours of sleep. Test the researchers' hypothesis that the percent is higher than 35.2%. Write down the null and alternative hypotheses. b. Calculate the test statistic. Mr C. Calculate the p-value. d. Based on the p-value, what is your conclusion? a.

1. Define the critical region for a hypothesis test and explain how we use it to support or reject our null and alternative hypotheses. 2. Identify and explain the influence of the three factors that affect the value of the z-score in a hypothesis test. 3.Identify the steps of a hypothesis test and what additional measure should always be included. 4. Describe the difference between type I and type II error

Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 159 said they decided not to go to college because they could not afford school. A. A newspaper article states that only a minority of the American adults who decide not to go to college do so because they cannot afford it and uses the point estimate from this survey as evidence. State the null and alternative hypotheses both in symbols and in words. B. State and check the conditions for the hypothesis test.

Last Spring, a couple of my Oxbow students, Izzy and Hannah, studied the how long it took customers at Hannafords to get through a self-checkout line compared to waiting through the Quick Checkout (12 items or less) register. Hannafords' management claims the mean wait time for the self-checkout is less than the established mean wait time of 4.7 minutes using the Quick Checkout line. They allowed the sisters to do some data collection, perform a statistical analysis on their results and report back to them about what they found. Management is interested in increasing the number of self-checkout registers if there is evidence that the registers decrease customers wait times. They will not need as many people working register and save in payroll costs. Hannah and Izzy collected data during three 5pm - 5:30pm times on random days. The results from 40 customers had a mean wait time of 4.4 minutes with a standard deviation of 0.6 minute. Keep this information for use in the next problem.…